Work has begun to determine the feasibility of using insects as biological controls, but effective biological controls are considered years away.
人们已经开始努力确定使用昆虫作为生物控制手段的可行性，但仍认为有效的生物控制手段还需要数年时间。
Therefore, the main ways of control of ragweed especially biological controls were reviewed in order to found integrative control system of ragweed.
本文对豚草防治的主要方法进行了综合论述，为豚草综合防治体系的建立提供参考。
Yet animals like sheep or goats eat weeds, so they can provide a biological control. Insects and other organisms can also act as biological controls.
然而，像绵羊或山羊之类的动物会吃杂草，因此它们可以起到生物控制作用。昆虫和其他生物也可以起到生物控制作用。
Taking Paenibacillus polymyxa as the biological controls bacterium, the inhibition effects of Paenibacillus polymyxa on penicilliosis of nectarine after harvest were studied.
本实验以植物内生多粘类芽孢杆菌作为生防菌种，研究该菌对油桃青霉病的抑制效果。
Every living thing has what scientists call a biological clock that controls behavior.
每一种生物都有控制自己行为的时钟，科学家们称之为生物钟。
Studies on the controls of Diamondback moth plutella xylostella by complex biological pesticide of Bacillus thuringiensisIn this study, biological test was performed based on plutella xylostella .
本研究以小菜蛾为试虫进行生物测定，在苏云金杆菌菌株筛选基础上对菌株混用、复配剂配方筛选及其田间防治效果进行了研究。
Studies on the controls of Diamondback moth plutella xylostella by complex biological pesticide of Bacillus thuringiensisIn this study, biological test was performed based on plutella xylostella .
本研究以小菜蛾为试虫进行生物测定，在苏云金杆菌菌株筛选基础上对菌株混用、复配剂配方筛选及其田间防治效果进行了研究。
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